(19)

(11)

EP 1 831 603 A2

(12)

(88) Date of publication A3: 09.11.2006 (43) Date of publication: 12.09.2007 Bulletin 2007/37 (21) Application number: 05826167.8 (22) Date of filing: 21.12.2005

(51) International Patent Classification (IPC):  F22B 1/28(2006.01) D06F 75/12(2006.01) (86) International application number: PCT/IB2005/054355 (87) International publication number: WO 2006/067756 (29.06.2006 Gazette 2006/26)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 22.12.2004 EP 04106869 (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventors: HAR, Tang, P. NL-5656 AA Eindhoven (NL) TEO, Adeline NL-5656 AA Eindhoven (NL) JIA, Xiaoming NL-5656 AA Eindhoven (NL) (74) Representative: Damen, Daniel Martijn  Philips Intellectual Property & Standards P.O. Box 220 5600 AE Eindhoven 5600 AE Eindhoven (NL)